Starting a raised bed on a slope
My yard is all slope. Where I want to start a raised bed 3 tiered is on a gentle 20 degree slope.
What would be the best way to set them up? It will be new beds.
Also what would be a good material for making them? I don't want something that would/could leech into the ground then into my veggies and then to me. I prefer healthy gardening.
Oh the beds will be about 4 foot wide and up to 6 to 8 feet long. How deep should I go? How high should I have the sides?
First time I have had enough room for a real raised garden and find myself clueless.
Any and all hints, clues, ideas etc are welcome.